05000390/FIN-2013002-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Failure to Correctly Implement Procedure for Pressurizer Pressure Channel Calibration |
| Description | A self-revealing (Green) NCV of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified for failure to properly follow plant procedures to perform a surveillance test for calibration of pressurizer pressure channel II. Specifically, the instrument maintenance surveillance test procedure 1-SI-68-6, 18 Month Channel Calibration Pressurizer Pressure Channel II, Loop 1-LPP-68-334 (P- 456), Revision 10, was not adequately followed by maintenance personnel during the calibration test. The licensees failure to correctly implement procedure 1-SI-68-6, 18 Month Channel Calibration Pressurizer Pressure Channel II, Loop 1-LPP-68-334 (P- 456), to configure the test equipment in the correct configuration was a performance deficiency. The finding was more than minor because it was associated with the Initiating Events Cornerstone attribute of Human Performance and adversely affected the cornerstone objective of limiting the likelihood of events that upset plant stability and challenge critical safety functions during shutdown or power operations. Specifically, the failure to adequately implement SI 1-SI-68-6, 18 Month Channel Calibration Pressurizer Pressure Channel II, Loop 1-LPP-68-334 (P-456), resulted in a reactor trip. The inspectors screened this finding in accordance with IMC 0609, Significance Determination Process, Attachment 4, Phase 1 Initial Screening and Characterization of Findings, and determined the finding was of very low safety significance (Green) since it did not result in the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition. The finding directly involved the cross-cutting area of Human Performance, work practices component under the aspect related to proceeding in the face of uncertainty. |
| Site: | Watts Bar  |
|---|---|
| Report | IR 05000390/2013002 Section 4OA3 |
| Date counted | Mar 31, 2013 (2013Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | R Monk S Shaeffer K Miller |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
| ' | |
Finding - Watts Bar - IR 05000390/2013002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Watts Bar) @ 2013Q1
Self-Identified List (Watts Bar)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||